Method for synthesizing tin selenide micro-grain powder through hydrothermal method
A technology of tin selenide and micro-crystals, applied in the direction of binary selenium/tellurium compounds, etc., can solve the problems of complex process, unhealthy operators, environmental pollution, etc., and achieve the effect of convenient and simple process and short synthesis time
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Embodiment 1
[0023] Weigh 1.2g of tartaric acid and dissolve it in 20ml of distilled water, stir until dissolved, then add 1mmol of tin dichloride into it, stir until the solution is clear and transparent, and prepare solution A. Weigh 1 mmol of selenium dioxide, 0.8 g of sodium hydroxide and 2 mmol of sodium borohydride into 15 ml of distilled water in sequence, and stir to obtain solution B. Slowly pour A into B, stir at room temperature for 15 minutes, transfer the resulting solution to an autoclave with a polytetrafluoroethylene liner, and then put it into an oven for reaction, starting from room temperature and increasing the temperature at a rate of 5°C / min to 180°C, heat preservation for 24 hours, then naturally cool the reaction system to room temperature, turn on the hydrothermal kettle, collect samples by centrifugation, and obtain black tin selenide powder after drying. figure 1 is the XRD spectrum of the product, indicating that the product is pure tin selenide. figure 2 It i...
Embodiment 2
[0025] Weigh 1.2g of tartaric acid and dissolve it in 20ml of distilled water, stir until dissolved, then add 1mmol of tin dichloride into it, stir until the solution is clear and transparent, and prepare solution A. Weigh 1 mmol of selenium dioxide, 0.8 g of sodium hydroxide and 2 mmol of sodium borohydride into 15 ml of distilled water in sequence, and stir to obtain solution B. Slowly pour A into B, stir at room temperature for 15 minutes, transfer the resulting solution to an autoclave with a polytetrafluoroethylene liner, and then put it into an oven for reaction, starting from room temperature and increasing the temperature at a rate of 5°C / min to 180°C, heat preservation for 12 hours, then naturally cool the reaction system to room temperature, turn on the hydrothermal kettle, collect samples by centrifugation, and obtain black tin selenide powder after drying. image 3 is the XRD spectrum of the product, no impurity peaks appear, indicating that the product is pure tin...
Embodiment 3
[0027] Weigh 1.2g of tartaric acid and dissolve it in 20ml of distilled water, stir until dissolved, then add 2mmol of tin dichloride into it, stir until the solution is clear and transparent, and prepare solution A. Weigh 1 mmol of selenium dioxide, 0.8 g of sodium hydroxide and 2 mmol of sodium borohydride into 15 ml of distilled water in sequence, and stir to obtain solution B. Slowly pour A into B, stir at room temperature for 15 minutes, transfer the resulting solution to an autoclave with a polytetrafluoroethylene liner, and then put it into an oven for reaction, starting from room temperature and increasing the temperature at a rate of 5°C / min to 180°C, heat preservation for 12 hours, then naturally cool the reaction system to room temperature, turn on the hydrothermal kettle, collect samples by centrifugation, and obtain black tin selenide powder after drying.
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